Re: [Orbit-python-list] (in Object obj) marshalling error

[Christian R. R. <ki...@as...>]

On 23 Jan 2001, Roland Mas wrote:

> > TypeError: Failed to marshal: Object Reference ()
> > 
> > even though a _is_ an object reference.
> 
>   Hm.  Is is a Python object reference, I'm not sure it's a CORBA
> object reference.

According to the CORBA Python Mappings,

 	If an operation expects parameters of the IDL Object type, any
	Python object representing an object reference might be passed as
	a value.

So I'm passing as a parameter a Python Object which I've just instantiated
from a class that inherits from a __POA class, so it _is_ a Corba Object.

> > Hmm. I wonder why I get a different message?
> 
>   For the same reason.  a is not of a type known by ORBit.

A different message, for the same reason? What I mean is that _any_ object
that I pass - be it local, Corba, or simple number/string objects get me
the same error. However, passing an IOR string gets me a different
one? Sounds strange, but I haven't looked at the source yet.

> You should add an interface like:
> 
> interface Foo {
>   attribute string bar ;
> } ;

Oh, I do have an interface for my Corba Object which I'm passing as a
parameter. The purpose of this exercise is binding an object - a factory
in this case - to the namingservice. The bind() call takes an Object as a
parameter, so I instantiate a factory and pass it on. However, the
marshalling breaks, and it breaks with any object I push through as well.

> > The practical effect of this is that it's impossible to use
> > orbit-python with the Orbit nameserver as of now.
> 
>   I'm not so sure.  It's not like I have done it, but I would be more
> convinced if you could retry with CORBA objects.

They were Corba Objects. I was incomplete in my explanation, and I'm
sorry, but the objects I was passing initially are Corba Objects with
interfaces defined in the IDL. And they get ht the exact same error as
plain Python objects, so it's strange.

Thanks a lot for the reply.

Take care,
--
/\/\ Christian Reis, Senior Engineer, Async Open Source, Brazil
~\/~ http://async.com.br/~kiko/ | [+55 16] 274 4311